Digital surface model 2023 of the Métropole de Lyon

Digital Surface Model (MNS) in Lambert-93 / NGF-IGN69 projection on the Lyon Metropolis (657 km ²) at a resolution of 50 cm per pixel. The image is made available in Cloud-Optimized GeoTIFF (COG) format with Deflate lossless compression. The MNS consists of a regular grid generated by interpolation from ‘soil’ and ‘on-ground’ points (building, … vegetation) of a LiDAR point seedling carried out by Sintegra, in two stages: * a global acquisition made between July and August 2023 * a specific acquisition on the Mont Verdun sector carried out in September 2024. The density of the point cloud is 30 points / m² et  the accuracy is 10 cm in altimetry (Z) and 20 cm in planimetry (XY). Please note that: * In case of no points, the grid was calculated from the nearest points. * For water surfaces, the MNS shows the altimetry values (Z)  a "Water DOWNLOAD" layer obtained by photogrammetric capture of the water contours recorded at the date of Lidar capture. This operation was co-financed by the European Union under the ERDF programme.